By using 114-year typhoon data in the north west Pacific adopted Poiss ion function,the Poission distribution characteristics of the disastrous typhoon events for a century along China′s coastline from the Bay of Bohai through the South China Sea area are discussed It is indicated that the possibility for se rious typhoon hitting could be described by Poissin distribution It is also fou nd that the results are very useful for program design of city development for i ndustry and agriculture It also points out that typhoon disaster indexes obtain ed with 50 year data in the north west Pacific is coincide with Saffir-simpson indexes by 70 year data in Caribbean Sea area.